{
  pkgs,
  ...
}:

let
  domaine = "nyanlout.re";
in
{
  services = {
    smartd = {
      enable = true;
      defaults.monitored = "-a -o on -s (S/../.././02|L/../15/./02)";
      notifications.mail = {
        enable = true;
        recipient = "paul@nyanlout.re";
      };
    };

    influxdb = {
      enable = true;
      dataDir = "/var/db/influxdb";
    };

    telegraf = {
      enable = true;
      extraConfig = {
        agent = {
          # Mitigation for periodic high load average
          # https://github.com/influxdata/telegraf/issues/3465
          collection_jitter = "5s";
        };
        inputs = {
          zfs = {
            poolMetrics = true;
          };
          net = { };
          netstat = { };
          cpu = {
            totalcpu = true;
          };
          kernel = { };
          mem = { };
          processes = { };
          system = { };
          disk = { };
          cgroup = [
            {
              paths = [
                "/sys/fs/cgroup/system.slice/*"
              ];
              files = [
                "memory.current"
                "cpu.stat"
              ];
            }
          ];
          ipmi_sensor = {
            path = "${pkgs.ipmitool}/bin/ipmitool";
          };
          smart = {
            path = "${pkgs.writeShellScriptBin "smartctl" "/run/wrappers/bin/sudo ${pkgs.smartmontools}/bin/smartctl $@"}/bin/smartctl";
          };
          exec = [
            {
              name_suffix = "_python_zpool";
              commands = [ "${pkgs.zfs}/bin/zpool list --json --json-int" ];
              data_format = "json";
              json_query = "pools.@values.#.{NAME:name,STATE:state,ALLOC:properties.allocated.value,CAP:properties.capacity.value,DEDUP:properties.dedupratio.value,FRAG:properties.fragmentation.value,FREE:properties.free.value,HEALTH:properties.health.value,SIZE:properties.size.value}";
              json_string_fields = ["STATE", "DEDUP", "HEALTH"];
              tag_keys = [ "NAME" ];
            }
          ];
        };
        outputs = {
          influxdb = {
            database = "telegraf";
            urls = [ "http://localhost:8086" ];
          };
        };
      };
    };

    udev.extraRules = ''
      KERNEL=="ipmi*", MODE="660", OWNER="telegraf"
    '';

    grafana = {
      enable = true;
      dataDir = "/var/lib/grafana";
      settings = {
        server = {
          http_addr = "127.0.0.1";
          root_url = "https://grafana.${domaine}";
        };
        smtp = {
          enabled = true;
          from_address = "grafana@${domaine}";
          skip_verify = true;
        };
        auth = {
          disable_signout_menu = true;
        };
        "auth.basic" = {
          enabled = false;
        };
        "auth.proxy" = {
          enabled = true;
          header_name = "X-WEBAUTH-USER";
        };
      };
    };

    zfs.zed.settings = {
      ZED_EMAIL_ADDR = [ "paul@nyanlout.re" ];
      ZED_NOTIFY_VERBOSE = true;
    };
  };

  systemd.services.influxdb.serviceConfig = {
    TimeoutStartSec = "10min";
  };

  security.sudo.extraRules = [
    {
      commands = [
        {
          command = "${pkgs.smartmontools}/bin/smartctl";
          options = [ "NOPASSWD" ];
        }
      ];
      users = [ "telegraf" ];
    }
  ];
}